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Continue adding successive 2mL portions of soap solution, shaking after each addition,until suds that persist for some time are formed.How much soap solution was added in all?________________________________________________________________________________________Why did lather finally form after repeated addition of soap solution?________________________________________________________________________________________________________________________________________________________________________________

Question

Continue adding successive 2mL portions of soap solution, shaking after each addition,until suds that persist for some time are formed.How much soap solution was added in all?Why did lather finally form after repeated addition of soap solution?________________________________________________________________________________________

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Solution

Without the specific number of 2mL portions added, it's impossible to determine the total amount of soap solution used. You would simply multiply the number of 2mL portions by 2 to get the total volume in milliliters.

Lather or suds are formed when soap solution is added repeatedly due to the nature of soap. Soap molecules have a hydrophilic (water-attracting) head and a hydrophobic (water-repelling) tail. When soap is added to water, these molecules arrange themselves into micelles with the hydrophobic tails on the inside and the hydrophilic heads on the outside. This allows the soap to trap oil and dirt, forming a lather. Initially, the soap might have been neutralizing hard water ions or binding with dirt and oil. After repeated additions, enough soap molecules are present to form micelles and create a lather that persists.

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